#include<stdio.h>
#include<string.h>
#include<unistd.h>
#include<sys/types.h>
#include<sys/wait.h>
#include<sys/stat.h>
#include<fcntl.h>
#include<ctype.h>
#include<stdlib.h>

int main()
{
    const char * str = "helo write\n";
    write(1,str,strlen(str));

    const char * str1 = "hello fwrite\n";
    fwrite(str1,strlen(str1),1,stdout);

    const char * str2 = "hello fputs\n";
    fputs(str2,stdout); 

    const char * str3 = "hello fprintf\n";
    fprintf(stdout,"%s",str3);
    
    fork();

    return 0;
}